<template>
  <view class="cart-container" v-if="cart.length !==0">
    <view class="cart-title">
      <uni-icons type="shop" size="18"></uni-icons>
      <text class="cart-title-text">购物车</text>
    </view>
    <!-- 商品列表区域 -->
    <uni-swipe-action>
      <block v-for="(goods, i) in cart" :key="i">
        <uni-swipe-action-item :options="options" @click="swipeActionClickHandler(goods)">
           <my-goods :goods="goods" :show-radio="true" :show-num="true" @radio-change="radioChangeHandler" @num-change="numberChangeHandler"></my-goods>
        </uni-swipe-action-item>
      </block>
    </uni-swipe-action>
    <!--结算区域-->
    <my-settle></my-settle>
  </view>
 <!-- 空白购物车区域 -->
  <view class="empty-cart" v-else>
    <image src="/static/cart_empty@2x.png" class="empty-img"></image>
    <text class="tip-text">空空如也~</text>
  </view>
</template>

<script>
  import badgeMix from '@/mixins/tabbar-badge.js'
  import {mapState,mapMutations} from 'vuex'
  export default {
    mixins: [badgeMix],
    computed:{
      ...mapState('m_cart',['cart'])
    },
    data() {
      return {
        options:[{
          text: '删除',
          style:{
            backgroundColor: '#C00000'
          }
        }]
      }
    },
    methods:{
      ...mapMutations('m_cart',['updateGoodsState','updateGoodsCount','removeGoodsById']),
      // 商品的勾选状态发生了变化
      radioChangeHandler(e) {
        console.log(e) // 输出得到的数据 -> {goods_id: 395, goods_state: false}
        this.updateGoodsState(e)
      },
      // 商品的数量发生了变化
      numberChangeHandler(e) {
        console.log(e)
      },
      // 点击了滑动操作按钮
      swipeActionClickHandler(goods) {
        console.log(goods)
      }
    }
  }
</script>

<style lang="scss">
.cart-title {
  height: 40px;
  display: flex;
  align-items: center;
  font-size: 14px;
  padding-left: 5px;
  border-bottom: 1px solid #efefef;
  .cart-title-text {
    margin-left: 10px;
  }
}
.empty-cart {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding-top: 150px;

  .empty-img {
    width: 90px;
    height: 90px;
  }

  .tip-text {
    font-size: 12px;
    color: gray;
    margin-top: 15px;
  }
}
.cart-container{
  padding-bottom: 50px;
}
</style>
